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Calculate percentages, clean text, format data, check colors and build campaign links without accounts or server processing.

Inspect URL parametersSee duplicate keys, UTM fields and encoded values as a table plus JSON.Structure FAQ/HowTo answersUse question-answer logic, tool FAQs and JSON-LD deliberately instead of keyword padding.Make payloads readableCheck JSON, Base64, URL encoding and regex in sequence without server contact.Debug JSON.parse errorsCheck trailing commas, wrong quotes, comments and broken numbers with context around the fault.Clean campaign URLsCheck target URL, UTM values, slug and redirect plan before publishing.
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Tool of the week · 2026-W21

Developer debug strip

Explain JSON errors, inspect query parameters and test regex matches without leaving the browser.

JSON error explainerURLSearchParams inspectorRegex tester
OpenCurated drop
Percentage calculator

∑ Numbers & calculators

Percentage calculator

Calculate percentage share, increase, decrease and part values in one view.

Result
Word counter

Aa Text tools

Word counter

Count words, characters, paragraphs and estimated reading time.

Result
JSON formatter

{ } Web & code

JSON formatter

Pretty-print JSON and show syntax errors.

Result

Search intents

Jump straight to the tasks people actually type.

Inspect URL parameters

See duplicate keys, UTM fields and encoded values as a table plus JSON.

MDN URLSearchParamsStructure FAQ/HowTo answers

Use question-answer logic, tool FAQs and JSON-LD deliberately instead of keyword padding.

Google Search CentralMake payloads readable

Check JSON, Base64, URL encoding and regex in sequence without server contact.

Browser APIsDebug JSON.parse errors

Check trailing commas, wrong quotes, comments and broken numbers with context around the fault.

MDN JSON.parseClean campaign URLs

Check target URL, UTM values, slug and redirect plan before publishing.

Toolwise Method

Workflows

Do not just open tools. Finish small workflows.

SEO publishing check

Check title, description, slug, canonical, robots and sitemap before publishing.

6 ToolsClean text before CMS import

Count raw copy, normalize casing, trim whitespace, sort lines and find duplicates.

6 ToolsMake lists and CSV usable

Turn small data sets from sheets, tickets or exports into a clean copy-ready shape.

6 ToolsBuild a clean campaign link

Check the target URL, set UTM values, normalize campaign naming and verify copy lengths.

6 Tools

Open workflow library

Categories

All tools

AaNESTIQText tools25 Tools

Count, format, clean, extract and prepare copy for CMS or UI work.

∑IRONSETNumbers & calculators13 Tools

Percentages, rule of three, averages, ratios, speed and quick metrics.

{ }RIGCRAFTWeb & code42 Tools

HTML, CSS, JSON, CSV, Base64, URLs, regex and browser debugging.

◐CHROMAImage & design22 Tools

Check colors, contrast, palettes, CSS clamp, shadows and UI parameters.

◷CHRONODate & time17 Tools

Timestamps, deadlines, countdowns, durations, calendar weeks and time zones.

◇KEYRINGSecurity19 Tools

Generate or inspect passwords, PINs, UUIDs, tokens, hashes and JWTs locally.

€LEDGERFinance25 Tools

VAT, discounts, margins, interest, cash discounts, price logic and business calculators.

▦DATAVAULTData & lists22 Tools

Clean lists, remove duplicates, count frequencies and normalize batches.

⌁ARCWELLMarketing & SEO27 Tools

UTM, campaign naming, snippets, canonicals, robots, sitemaps and link hygiene.

⚙FORGEGenerators8 Tools

Random values, sample copy, picks, teams, raffles and lightweight decision helpers.

Workflows

Tools that behave like a workflow.

01Input → Result

02Copy → Clipboard

03Next tool → local transfer